Disk Coulter Scraper Assembly with Spring Tensioning
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Solution Overview
Problem
Existing agricultural tools with wiper elements face challenges such as decreasing pressure over time, requiring frequent operator intervention to maintain adhesion removal efficiency, and increased wear and tear due to solid materials in the field.
Innovation Solution
A clamping device with a linear spring element that maintains almost constant pressure on the wiper elements, allowing for manual or automatic adjustment, and featuring a torsion spring or elastic plastic spring element for improved durability and vibration damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scraper elements are pressed against the disc share to remove buildup, then adhesion removal effectiveness is improved, but the pressure decreases over time due to wear requiring frequent adjustment
Solution Approach 1:
The scraper assembly is designed with a dynamic tensioning device that automatically adjusts the pressure of scraper elements against the disc share. The tensioning device incorporates a spring element that maintains constant pressure despite wear of the scraper elements or disc, eliminating the need for frequent manual adjustments by the operator
Solution Approach 2:
The tensioning device with spring element enables the scraper assembly to self-adjust and maintain optimal pressure automatically. The spring element compensates for wear automatically, allowing the system to maintain reliable adhesion removal effectiveness without requiring operator intervention for pressure adjustment
2Reliability
If scraper elements are pressed against the disc with high pressure to remove buildup, then adhesion removal effectiveness is improved, but wear from solid materials like stones and compacted soil increases
Solution Approach 1:
The spring element in the tensioning device provides dynamic pressure adjustment that maintains optimal cleaning force while accommodating variations in disc surface conditions. This dynamic system prevents excessive pressure that would increase wear from solid materials while ensuring sufficient pressure for effective adhesion removal
Solution Approach 2:
The spring element acts as a cushioning element that absorbs shock and reduces the impact of solid materials like stones and compacted soil on the scraper elements. This beforehand cushioning protects the scraper elements from excessive wear while maintaining their cleaning effectiveness
3Reliability
If manual adjustment of scraper pressure is performed frequently to maintain constant pressure, then adhesion removal effectiveness is maintained, but operator effort and time consumption increase
Solution Approach 1:
The tensioning device with spring element enables automatic pressure maintenance without operator intervention. The spring element self-adjusts to maintain constant pressure on the scraper elements against the disc, eliminating the time-consuming manual adjustment process while ensuring reliable adhesion removal effectiveness
Solution Approach 2:
The spring element in the tensioning device provides automatic feedback-based pressure regulation. As the scraper elements wear or the disc surface changes, the spring element automatically adjusts the pressure to maintain optimal contact force, eliminating the need for operator monitoring and adjustment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures consistent adhesion removal over extended periods with reduced operator effort, extends the service life of wiper elements, and provides improved resistance to wear and vibration.
Implementation Method 1
a tensioning device (42), in particular with a spring element (45), is created by utilizing a spring characteristic, in particular at least one linear spring rate, of the at least one spring element (45)
Implementation Method 2
featuring a torsion spring or elastic plastic spring element for improved durability and vibration damping
Data Source
Figure 1
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AI summary
Disc coulter (30) for an agricultural implement (10), in particular a seed drill and/or a tillage implement, comprising at least one coulter holder (31), at least one disc (32) rotatably mounted on the coulter holder (31), and at least two scraper elements (41) each assigned to one side of the disc (32), wherein at least two scraper elements (41) are combined to form a scraper assembly (40), preferably U-shaped, and wherein the scraper elements (41) are designed to be compressible against the disc (32) by means of at least one clamping device (42), preferably with adjustable pressure.In order to design a disc share (30) in such a way as to increase operational reliability and thus the effectiveness of soil cultivation in a simple manner, it is provided that the clamping device (42) is equipped by means of at least one spring element (45) to automatically adjust the pressure exerted on the disc (32) by the scraper elements (41).